Nintendo did not release these fixes as a downloadable patch (the DS had no system-wide patching mechanism like the Wii or Switch). The only way to get Version 1.1 was to buy a new physical cartridge with the revised code.
Happy farming, and remember to save twice. Old DS games are still unpredictable. Note: As of 2025, no official digital re-release of Harvest Moon DS v1.1 exists on the Switch Online or eShop. Emulation and original cartridges are the only methods.
Harvest Moon DS Cute runs on an entirely updated engine. It contains all the fixes of the Version 1.1 ROM, plus additional stability patches and new content (like the ability to marry the Witch Princess more easily).
Part 5: The "DS Cute" Elephant in the Room Before you obsess over the "11 UPD," consider this: In 2008, Natsume released Harvest Moon DS Cute (a female protagonist version).
Because the ROM scene in the mid-2000s was chaotic, most dumps online are of the broken 1.0 version. A few dedicated preservationists dumped the Rev1 cartridge and uploaded it as "Harvest Moon DS v1.1."